Shaking-grate.



. Patented Dec. 24, I90I.

2 Sheets-Sheet 4 G. S. HERRICK.

' SHARING GRATE.

(Appl: t niildllaye 1901) (llo Modal.)

INVENTOR v mim Wf/#f OQTTORNEY.

No. 689,645. Patented Dec. 24, I90I.

`a. s. HEnmcK. SHAKING GRATE.'

(Application lod Icy 6, 1901.) (Ilo Modeln l 2 Shaevts-Sheat '2.

'WITAssES.- r 7 INVENTOR JTTQRNEK UNITED STATES PATENT OFFICE.

GEORGE S. HERRIOK, OF SYRAOUSE, NElV YORK.

SHAKiNG-GRATE.

SPECIFICATION forming part of :Letters Patent No. 689,645, dated December 24, 1901- Application led May 6, 1901. Serial No. 58,882. (No model.)

To @ZZ whom it may concern:

Be it known that I, GEORGE S. HERRICK, a citizen of the United States, and a resident of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Shaking-Grates, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to the class of gratos which are composed of a series of bars provided with pivotal bearings and with means for rocking said bars and the invention consists in an improved construction of the gratebars, which in their shaking or rocking motion eectually break the clinkers and thoroughly clean the bottom of the ire without incurring waste of fuel; and the invention also consists in the combination, with the pivoted grate bars provided with depending crank-arms, of links coupling the successive crank-arms in pairs' and allowing the gratebars to be readily removed separately from each other when required for repairs or renewal of grate.

In the accompanying drawings, Figure l is a side view of a grate embodying my invention. Fig. 2 is a plan view of said grate. Fig. 3 is a plan view of the couplings which transmit motion to the grate-bars. Fig. 4 is a fragmentary side View of one of the end portions of the grate-bar. Fig. 5 is an end view of two adjacent grate-bars. Fig. 6 is a per spective view of a portion of one of the gratebars, and Fig-7 is a vertical transverse lsecn tion on line X X in Fig. l.

Similar letters of reference indicate corre# spending parts.

A represents the frame, which supports the grate independently ofthe masonry surrounding the ash-pit. To adapt this frame for ashpits of different-depths, I form said frame with supporting-legs A', which are made adj ustable in length,preferably by forming each of said legs of two end sections, one of which is provided with a vertical slot d and with sockets or mortises d CZ adjacent to the edges of said slot. The bolts @,which fasten said legsectionstogether,passwiththeirscrew-threaded ends through said slot and through holes in the companion leg-section and are provided with nuts n, by means of which the two leggrate-bars c c.

sections are clamped together, while the heads n of the bolts are seated in the mortises CZ and prevent the upper leg-section from accidentally slipping down on the lower leg-section, as shown in Fig. 7 of the drawings. The top 'of said grate-supporting frame is provided with a series of recessed bearings et a for the trunnions t on the ends of the Each of these grate-bars is formed in one piece, with a series of vertical webs h b distributed over the length of the bar, with spaces c c' between the webs. Each of these websis formed with convex and concave top portions h h 2 on opposite sides of the bar and with concavedv edges h3 b3 under said top portions, as more clearly shown in Fig. 5 of the drawings. The successive webs of each bar are disposed in reversed positions and with the intervening spaces c c inline with the spaces of the adjacent bars. The shaking of said grate-bars causes the conveXed and concaved webs to thoroughly agie tate the bottom of the re and the clinkers to drop onto the depressed concaved top portions 172 of the webs, where said clinkers are broken by the concave bottom edges h3 of the webs of the adjacentbar descending while the eoncaved top portions b2 are ascending. The

broken clinkers being thrown under the grate effectually cleans the bottom of the re without danger of causingwaste of fuel through the grate. Said grate-bars are provided at corresponding ends with flxed pendent @rank1 arms f, preferably formed integral with the bars and terminated with laterally-projecting trunnions f. These trunnions I couple successively in pairs by means of'links Z Z, provided in their ends with eyes for receiving through them the trunnions f. One of the end links has connected to it a bar h, which extends through the front plate P and is connected to a lever L, fulcrumed on a stud i, projecting from said4 front plate. By operating said lever reciprocating motion is imparted to the aforesaid links, which causes the crank-armsf to transmit rocking motion to the grate-bars.

The bearings a a are open at the top to allow the grate-bars to be readily lifted from the frame A when required for repairs or renewal, which is also facilitated by the use of the separable coupling-links Z Z.

IOO

What I claim as my invention is- 1. A grate composed of bars, each having projecting from it a series of vertical Webs distributed over the length of the bar with spaces between the webs, each of said webs formed with convex and concave top portions on opposite sides of the bar and the successive webs being disposed in reverse positions, and means for shaking said bars.

2. A grate composed of bars, each having projecting from it a series of vertical webs distributed over the length of the bar with spaces between the webs and disposed with said spaces in line with the spaces of the adjacent bars, each of said webs formed with convex and concave top portions on opposite sides of the bar and the successive webs being disposed in reverse positions, depending crank-arms iixed to said bars, a coupling connecting the successive crank-arms, and means for imparting reciprocating motion to said coupling as set forth.

3. A grate composed of bars, each formed with vertical webs distributed over the length of the bar with spaces between the webs, each of said webs formed with convex and concave top portions 011 opposite sides of the bar and the successive webs being disposed in reverse positions, depending crank-arms fixed to said bars and terminated with trunnions, links coupling said trnnnions in pairs, a rod connected to one of the end links, and a grateshaking lever connected to said rod as set forth.

4. A grate composed of bars, each formed with vertical webs distributed over the length ofthe bar with spaces between the webs, each oi' said webs formed with convex and concave top portions on opposite sides of the bar and the successive Webs being disposed in reverse positions and arranged to pass through the spaces of the adjacent bars, crank-arms fixed to said grate-bars, coupling-links connecting said crank-arms in pairs, and a lever connected to said links for imparting rocking motion to the crank-arms as set forth.

5. The combination with the ash-pit and grate, of a frame provided with legs supporting the grate independently ot' the walls of the ash-pit, and each of said legs composed of sections lapping endwise one upon the other, one of said sections provided with a vertical slot and with sockets in the side of the sections adjacent to the edges of the slot, and attaching-bolts passing through said slot and through the other of said leg-sections and seated with their heads in the sockets and provided with nuts for clamping the leg-seetions together substantially as set forth.

Witnesses:

J. J. LAAss, H. B. SMITH. 

